AP File PhotoFormer Michigan Gov. Jennifer Granholm speaks with President Barack Obama at the University of Michigan's commencement in 2010.

Former Michigan Gov. Jennifer Granholm on Sunday reflected via Facebook on her time in office in relation to a growing criticism of President Obama.

The president has taken flack -- including a New York Times column Sunday which Granholm referenced in her post -- for shying away from confrontation. Many have lamented his compromise with Republicans in the deal that extended the Bush tax cuts in late 2010 and the debt ceiling agreement reached last week.

"Looking back on my terms as governor, one of my biggest regrets is being too 'nice,'" she wrote. "It's not in my nature to be in-your-face confrontational. Yet these times require hard lines in the sand.

"This is a lesson that our president, I hope, will learn more quickly than I did."